The given bar plots compare the hours of watching tv across seven age groups in Canada from 1991 to 2001. Overall, the hours of watching tv have slightly decreased during 10-year period, and older adult comprised the majority of viewers on average.
It is immediately apparent that there was a significant difference in the hours of watching tv between the start and end of the mentioned period. In 1991, the number of hours spent on watching tv was approximately just over 23 hours per week. However, this value gently dropped to around 22 hours per week in 2001. It is noticeable that the slope of falling became greater in 1999.
Obviously, adult who spent most of their time on working, accounted for lowest number of hours in terms of watching tv, reaching just 15 hours per week. In contrast, elder adult (aged over 60) represented a huge number of hours, peaking just over 30 hours per week. Similarly, the hours of watching tv by children showed a relatively large value, about just under 20 hours per week.